* * Is the man who owns the ladder ~~exploiting labor''? O NE OF THE WAYS many of us earned money as kids was picking cherries. We had to scramble up the tree trunk, stand on one limb, hold onto another with one hand, and pick with the other hand. Slow, not too safe, and we never did reach many of the ripest and best cherries. If we had had a good ladder we could have stood safely, picked with both hands, reached the ripest cherries, and filled a basket in half the ti...